Association between metabolic syndrome components and the risk of development of chronic kidney disease.

Note: Adjusted for factors included in age and sex. Abbreviations: CI, confidence interval; HDL, high-density lipoprotein. aReference group is lowest quartile (Q1) for each set of quartiles of factors. bReference group is 0 component for number of componants model. cP value for trend>0.05. dP value for trend<0.05. eP value for trend<0.001.